Back to EveryPatent.com
United States Patent | 6,072,829 |
Dirr | June 6, 2000 |
To achieve economy of a transmission path with good quality of transmission and low expenditure compared to previous codes such as 4PSK-64PSK, the invention provides higher-value pulse duration encoding, such that there is provided only an alternating current of a frequency and phase position, with code elements of different pulse durations which are encoded by a different number of periods or half-periods. The following duration pulse is marked by an amplitude change.
Inventors: | Dirr; Josef (Neufahrner Strasse 5, 81679 Munich, DE) |
Appl. No.: | 921889 |
Filed: | August 25, 1997 |
Feb 19, 1997[DE] | 197 06 411 |
Current U.S. Class: | 375/239; 341/109; 341/179; 375/279 |
Intern'l Class: | H03K 007/04 |
Field of Search: | 375/239,308,279,286 332/103,112 370/212,213 341/53,56,57,68,70,682,109,178,179 358/261.1,261.2,262.1 |
3847732 | Nov., 1974 | Perreault | 358/261. |
5050188 | Sep., 1991 | Dirr. | |
5581368 | Dec., 1996 | Dirr | 358/426. |
5587797 | Dec., 1996 | Dirr | 358/261. |
5675609 | Oct., 1997 | Johnson | 375/237. |
Foreign Patent Documents | |||
0 197 529 | Oct., 1986 | EP. | |
34 39 676 | May., 1986 | DE. | |
36 30 117 | Apr., 1988 | DE. | |
197 07 290 | Sep., 1997 | DE. |